Adding thread_map event to pass/store thread maps as data in pipe/perf.data.
Storing thread ID along with the standard comm[16] thread name string. Link: http://lkml.kernel.org/n/tip-2l07qyf3buhnt83q4ezqz...@git.kernel.org Signed-off-by: Jiri Olsa <jo...@kernel.org> --- tools/perf/util/event.c | 1 + tools/perf/util/event.h | 13 +++++++++++++ tools/perf/util/session.c | 26 ++++++++++++++++++++++++++ tools/perf/util/tool.h | 3 ++- 4 files changed, 42 insertions(+), 1 deletion(-) diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c index 8b10621b415c..771545a27b9b 100644 --- a/tools/perf/util/event.c +++ b/tools/perf/util/event.c @@ -37,6 +37,7 @@ static const char *perf_event__names[] = { [PERF_RECORD_AUXTRACE_INFO] = "AUXTRACE_INFO", [PERF_RECORD_AUXTRACE] = "AUXTRACE", [PERF_RECORD_AUXTRACE_ERROR] = "AUXTRACE_ERROR", + [PERF_RECORD_THREAD_MAP] = "THREAD_MAP", }; const char *perf_event__name(unsigned int id) diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h index a0dbcbd4f6d8..f075f9ed0051 100644 --- a/tools/perf/util/event.h +++ b/tools/perf/util/event.h @@ -226,6 +226,7 @@ enum perf_user_event_type { /* above any possible kernel type */ PERF_RECORD_AUXTRACE_INFO = 70, PERF_RECORD_AUXTRACE = 71, PERF_RECORD_AUXTRACE_ERROR = 72, + PERF_RECORD_THREAD_MAP = 73, PERF_RECORD_HEADER_MAX }; @@ -356,6 +357,17 @@ struct context_switch_event { u32 next_prev_tid; }; +struct thread_map_data_event { + u64 pid; + char comm[16]; +}; + +struct thread_map_event { + struct perf_event_header header; + u64 nr; + struct thread_map_data_event data[]; +}; + union perf_event { struct perf_event_header header; struct mmap_event mmap; @@ -378,6 +390,7 @@ union perf_event { struct aux_event aux; struct itrace_start_event itrace_start; struct context_switch_event context_switch; + struct thread_map_event thread_map; }; void perf_event__print_totals(void); diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index 428149bc64d2..ec1ecd31003b 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -296,6 +296,16 @@ int process_event_auxtrace_error_stub(struct perf_tool *tool __maybe_unused, return 0; } + +static +int process_event_thread_map_stub(struct perf_tool *tool __maybe_unused, + union perf_event *event __maybe_unused, + struct perf_session *session __maybe_unused) +{ + dump_printf(": unhandled!\n"); + return 0; +} + void perf_tool__fill_defaults(struct perf_tool *tool) { if (tool->sample == NULL) @@ -346,6 +356,8 @@ void perf_tool__fill_defaults(struct perf_tool *tool) tool->auxtrace = process_event_auxtrace_stub; if (tool->auxtrace_error == NULL) tool->auxtrace_error = process_event_auxtrace_error_stub; + if (tool->thread_map == NULL) + tool->thread_map = process_event_thread_map_stub; } static void swap_sample_id_all(union perf_event *event, void *data) @@ -616,6 +628,17 @@ static void perf_event__auxtrace_error_swap(union perf_event *event, event->auxtrace_error.ip = bswap_64(event->auxtrace_error.ip); } +static void perf_event__thread_map_swap(union perf_event *event, + bool sample_id_all __maybe_unused) +{ + unsigned i; + + event->thread_map.nr = bswap_64(event->thread_map.nr); + + for (i = 0; i < event->thread_map.nr; i++) + event->thread_map.data[i].pid = bswap_64(event->thread_map.data[i].pid); +} + typedef void (*perf_event__swap_op)(union perf_event *event, bool sample_id_all); @@ -643,6 +666,7 @@ static perf_event__swap_op perf_event__swap_ops[] = { [PERF_RECORD_AUXTRACE_INFO] = perf_event__auxtrace_info_swap, [PERF_RECORD_AUXTRACE] = perf_event__auxtrace_swap, [PERF_RECORD_AUXTRACE_ERROR] = perf_event__auxtrace_error_swap, + [PERF_RECORD_THREAD_MAP] = perf_event__thread_map_swap, [PERF_RECORD_HEADER_MAX] = NULL, }; @@ -1179,6 +1203,8 @@ static s64 perf_session__process_user_event(struct perf_session *session, case PERF_RECORD_AUXTRACE_ERROR: perf_session__auxtrace_error_inc(session, event); return tool->auxtrace_error(tool, event, session); + case PERF_RECORD_THREAD_MAP: + return tool->thread_map(tool, event, session); default: return -EINVAL; } diff --git a/tools/perf/util/tool.h b/tools/perf/util/tool.h index cab8cc24831b..1af4774960c3 100644 --- a/tools/perf/util/tool.h +++ b/tools/perf/util/tool.h @@ -55,7 +55,8 @@ struct perf_tool { event_op2 build_id, id_index, auxtrace_info, - auxtrace_error; + auxtrace_error, + thread_map; event_op3 auxtrace; bool ordered_events; bool ordering_requires_timestamps; -- 2.4.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
